Advanced Optical Materials最新文献_第3页

Benzothiadiazole-Based Dichroic Dyes: Novel Approaches for Electrically Tunable Liquid Crystal Smart Windows

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2025-02-27 DOI: 10.1002/adom.202402687

Danyang Wan, Yongchi Ma, Juanli Li, Minggang Hu, Lexuan Liang, Lingchao Mo, Zhaoyi Che, Chen Tang, Kang Zhao, Hua Jiao, Jian Li

{"title":"Benzothiadiazole-Based Dichroic Dyes: Novel Approaches for Electrically Tunable Liquid Crystal Smart Windows","authors":"Danyang Wan, Yongchi Ma, Juanli Li, Minggang Hu, Lexuan Liang, Lingchao Mo, Zhaoyi Che, Chen Tang, Kang Zhao, Hua Jiao, Jian Li","doi":"10.1002/adom.202402687","DOIUrl":"https://doi.org/10.1002/adom.202402687","url":null,"abstract":"A series of benzothiadiazole (BT)-based dichroic dyes with donor–acceptor–donor (D–A–D) molecular frameworks is designed and synthesized, exhibiting absorption spectra that cover the visible light region and are tunable through molecular modifications. Most of the newly synthesized dyes show high dichroic ratios and order parameters, ensuring strong optical anisotropy and good alignment within the liquid crystal host mixture. The performance of individual dyes in smart window applications is evaluated, with transmittance changes observed under dynamic electric fields, demonstrating their potential for use in electrically tunable smart windows. To achieve full visible-light modulation, the combination of complementary absorption dyes is screened and an optimized mixture Mix-7 is obtained, which not only achieves full visible-light absorption coverage but also demonstrates smooth and dynamic transmittance modulation under varying voltages. Finally, a prototype smart window filled with Mix-7 is fabricated to validate the continuous tunability of dye-doped liquid crystal-based systems. Additionally, further introduction of a polarizer film significantly reduces the transmittance of the demo, especially in the OFF state which presents an almost completely dark state, highlighting the potential for automotive smart window applications.","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 8","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143622561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Photon-Engineered All-Day Radiative Warming Utilizing Solar and Atmospheric Energy

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2025-02-27 DOI: 10.1002/adom.202402432

Yining Zhu, Huanzheng Zhu, Rongxuan Zhu, Yiwei Zhou, Min Qiu, Qiang Li

{"title":"Photon-Engineered All-Day Radiative Warming Utilizing Solar and Atmospheric Energy","authors":"Yining Zhu, Huanzheng Zhu, Rongxuan Zhu, Yiwei Zhou, Min Qiu, Qiang Li","doi":"10.1002/adom.202402432","DOIUrl":"https://doi.org/10.1002/adom.202402432","url":null,"abstract":"Maintaining optimal temperatures continuously is crucial for various applications, yet existing methods relying on selective solar absorbers fail to provide continuous warmth throughout the entire day. A photon-engineered flexible film is proposed for all-day radiative warming, integrating multiple functional layers to regulate radiation across different spectral bands. This design enhances the heat absorption efficiency of solar and atmospheric energy (α0.3−2.5 µm = 0.95, α5−8 µm = 0.75, α14−16 µm = 0.84) while minimizing outward radiation (ɛ8-14 µm = 0.13). Experimental validation demonstrates superior performance over traditional low-emissivity warming blankets under varying environmental conditions, achieving 9.4 °C higher temperature during the day and 1.4 °C higher at night. Moreover, the film's remarkable warming capability highlights its significant application value in anti-condensation. This underscores its potential as a sustainable and effective thermal management solution for carbon neutrality.","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 8","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143622562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bio-Inspired Bright Non-Iridescent Structurally Colored Nanopigments Featuring Additive Color Mixing Performance (Advanced Optical Materials 6/2025)

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2025-02-24 DOI: 10.1002/adom.202570059

Wentao Wang, Wenzhen Zhang, Yicheng Zhou, Yuyuan Yao, Bingtao Tang, Liming Ding

引用次数: 0

Independent and Free Control of Multiple Beams Enabled by Wideband Spin-Decoupled Metasurface (Advanced Optical Materials 6/2025)

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2025-02-24 DOI: 10.1002/adom.202570061

Fengxia Li, Xiaohan Yin, Jia-Yuan Yin, Jing-Ya Deng

引用次数: 0

Exploring Strategies for Performance Enhancement in Micro-LEDs: a Synoptic Review of III-V Semiconductor Technology (Advanced Optical Materials 6/2025)

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2025-02-24 DOI: 10.1002/adom.202570060

Driss Mouloua, Michael Martin, Miguel Beruete, Christophe Jany, Karim Hassan, Thierry Baron

引用次数: 0

High-Transmission Mid-Infrared Bandpass Filters using Hybrid Metal-Dielectric Metasurfaces for CO2 Sensing

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2025-02-21 DOI: 10.1002/adom.202402603

Amr Soliman, C Williams, Richard Hopper, Florin Udrea, Haider Butt, Timothy D. Wilkinson

{"title":"High-Transmission Mid-Infrared Bandpass Filters using Hybrid Metal-Dielectric Metasurfaces for CO2 Sensing","authors":"Amr Soliman, C Williams, Richard Hopper, Florin Udrea, Haider Butt, Timothy D. Wilkinson","doi":"10.1002/adom.202402603","DOIUrl":"https://doi.org/10.1002/adom.202402603","url":null,"abstract":"Mid-infrared (MIR) spectroscopy is widely applied in many applications such as gas sensing, industrial inspection, astronomy, and imaging. While thin-film narrowband interference filters are cost-effective for MIR sensing, their complex fabrication limits their suitability for miniaturized systems. Plasmonic nanostructures, though explored for MIR applications, suffer from broad spectral responses and low efficiencies due to the ohmic losses inherent in metals. All-dielectric metasurfaces, with low intrinsic losses, have been proposed as alternatives for MIR spectroscopy. However, their operation is typically limited to reflection mode. In this work, a hybrid metal-dielectric metasurface operating in transmission mode for MIR spectroscopy is introduced. Composed of germanium (Ge) atop aluminium (Al) cylinders on a calcium fluoride (CaF2) substrate, the metasurface achieves high transmission efficiency (80%) at λ = 2.6 µm and a narrow full-width-half-maximum of 0.4 µm. The transmission response arises due to the hybridization of modes between the Ge and Al structures. Numerical simulations are demonstrated, a straightforward fabrication method, and successful deployment as an in-line optical filter for CO2 gas detection, achieving a detection limit of ≈0.04% (≈400 ppm). This work highlights the potential of hybrid metasurfaces as in-line gas sensing filters in MIR spectroscopy.","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 8","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adom.202402603","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143622565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Machine Learned Structure-Property Correlation Between Nanohelices and Circular Dichroism 机器学习纳米螺旋与环二色性之间的结构-性能相关性

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2025-02-21 DOI: 10.1002/adom.202402595

Juanshu Wu, Yingming Pu, Jin Wang, Bing Gu, Xin Chen, Hongyu Chen

{"title":"Machine Learned Structure-Property Correlation Between Nanohelices and Circular Dichroism","authors":"Juanshu Wu, Yingming Pu, Jin Wang, Bing Gu, Xin Chen, Hongyu Chen","doi":"10.1002/adom.202402595","DOIUrl":"https://doi.org/10.1002/adom.202402595","url":null,"abstract":"Rational design of chiral nanostructures with desired Circular Dichroism (CD) spectra requires a quantitative structure-property relationship, which has so far been unavailable. Using a data-driven method, the aim is to establish such a relationship for nanohelices, a prevalent structural element of chiral nanostructures. Given the challenges in synthesizing nanohelices and separating racemic mixtures, obtaining extensive CD data has been difficult. Instead, CD spectra of 1260 nanohelices are stimulated using finite-difference time-domain method. This dataset is used to train a convolutional neural network that can accurately predict the CD spectra using a few key structural parameters such as pitch and curl. Moreover, an inverse design model is developed that can generate the right helix with the desired CD. To establish quantitative relationships, Shapley Additive explanations analysis and case studies are devised for the prediction model. The algorithm efficiently analyzes the structure-property correlation, revealing the specific degrees of structural influence on the spectroscopic characteristics. Furthermore, the neural-network-based model can be extended via transfer learning to predict CD spectra of nanohelices made of other noble metals (Ag, Cu). It is believed that AI-based approaches can significantly broaden the scope of wet-chemistry nanosynthesis and computational techniques in the design of chiral nanostructures.","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 9","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143689433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recent Advances in Narrow Emission Bandwidth Materials for Application in Organic Light-Emitting Diodes

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2025-02-21 DOI: 10.1002/adom.202402653

Jihoon Kang, Dong Jin Shin, Jun Yeob Lee

引用次数: 0

End-to-End Metasurface Design for Temperature Imaging via Broadband Planck-Radiation Regression

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2025-02-20 DOI: 10.1002/adom.202402498

Sophie Fisher, Gaurav Arya, Arka Majumdar, Zin Lin, Steven G. Johnson

引用次数: 0

High-Performance Zinc-Lead Alloy Green Quasi-2D Perovskite Light-Emitting Diodes

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2025-02-18 DOI: 10.1002/adom.202402360

Guangchuan Zhong, Guoqiang Yuan, Boyang Li, Langwen Qiu, Yan Zhang, Guanwei Sun, Zhao Chen, Fanyuan Meng, Shi-Jian Su

{"title":"High-Performance Zinc-Lead Alloy Green Quasi-2D Perovskite Light-Emitting Diodes","authors":"Guangchuan Zhong, Guoqiang Yuan, Boyang Li, Langwen Qiu, Yan Zhang, Guanwei Sun, Zhao Chen, Fanyuan Meng, Shi-Jian Su","doi":"10.1002/adom.202402360","DOIUrl":"https://doi.org/10.1002/adom.202402360","url":null,"abstract":"Lead-based perovskite light-emitting diodes (PeLEDs) is gaining significant attention for their outstanding optoelectronic properties. However, the intrinsic lead toxicity in these materials presents serious environmental and health risks, limiting their further development. Here, highly efficient zinc-lead alloy quasi-2D perovskites are developed through Zn2+ substitution and additive engineering. The Zn2+ substitution improves tolerance factors, increases radiative recombination rates, and suppresses nonradiative recombination, thereby enhancing stability. Additionally, [bis(4-methoxyphenyl) phosphinyloxy]carbamic acid tert-butyl ester (BPCA) additive effectively passivates bromine vacancy defects and improves film quality. The successful Zn2+ substitution and additive passivation strategy results in a significantly increased photoluminescence quantum yield from 4.3 to 85.6%. Consequently, high-performance zinc-lead alloy green PeLEDs are achieved with a maximum current efficiency of 54.35 cd A−1 and a peak external quantum efficiency of 22.49%, representing the highest performance among green PeLEDs with partial lead substitution. Moreover, the T50 lifetime of Zn-Lead alloy PeLEDs is ≈8.9 times longer than that of the pristine PeLEDs. The approach not only mitigates lead toxicity but also improves device efficiency and stability, representing a significant advancement toward safer and more sustainable perovskite-based optoelectronic devices.","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 7","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143555052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0